Search for quadrupole strength in the electroexcitation of the Δ+ (1232)

C. Mertz, C. E. Vellidis, Ricardo Alarcon, D. H. Barkhuff, A. M. Bernstein, W. Bertozzi, V. Burkert, J. Chen, J. R. Comfort, G. Dodson, S. Dolfini, K. Dow, M. Farkhondeh, J. M. Finn, S. Gilad, R. W. Gothe, X. Jiang, K. Joo, N. I. Kaloskamis, A. KarabarbounisJ. J. Kelly, S. Kowalski, C. Kunz, R. W. Lourie, J. I. McIntyre, B. D. Milbrath, R. Miskimen, J. H. Mitchell, C. N. Papanicolas, C. F. Perdrisat, A. J. Sarty, J. Shaw, S. B. Soong, D. Tieger, C. Tschalær, W. Turchinetz, P. E. Ulmer, S. Van Verst, G. A. Warren, L. B. Weinstein, S. Williamson, R. J. Woo, A. Young

Research output: Contribution to journalArticle

124 Scopus citations


High-precision 1H(e, elp)φ0 measurements at Q2 = 0.126 (GeV/c)2 are presented. It allows the determination of quadrupole amplitudes in the γ*N → △ transition, in which the reliability of electroproduction models was simultaneously tested. The derived quadrupole-to-dipole (I = 3/2) amplitude ratios, RSM = (-6.5 ± 0.2stat+sys ± 2.5mod)% and REM = (-2.1 ± 0.2stat+sys ± 2.0mod)%, are dominated by model error.

Original languageEnglish (US)
Pages (from-to)2963-2966
Number of pages4
JournalPhysical Review Letters
Issue number14
StatePublished - Apr 2 2001


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Mertz, C., Vellidis, C. E., Alarcon, R., Barkhuff, D. H., Bernstein, A. M., Bertozzi, W., Burkert, V., Chen, J., Comfort, J. R., Dodson, G., Dolfini, S., Dow, K., Farkhondeh, M., Finn, J. M., Gilad, S., Gothe, R. W., Jiang, X., Joo, K., Kaloskamis, N. I., ... Young, A. (2001). Search for quadrupole strength in the electroexcitation of the Δ+ (1232). Physical Review Letters, 86(14), 2963-2966.